Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Material Design Lite is a library of components for web developers.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Yandex.Metrica is a free web analytics service that tracks and reports website traffic.